How to refresh the page in thinkphp

1. The basic meaning of page refresh

In the process of website development, page refresh usually refers to reloading the page based on the current page. After refreshing, re-obtain the data and update the page display. Page refresh is generally divided into two categories: front-end refresh and back-end refresh.

Refreshing the front-end page can use front-end technologies, such as JavaScript, HTML and CSS, to refresh the page manually or automatically. Implementing back-end refresh usually requires writing back-end scripts or using ajax and other technologies to operate on the server side.

2. Implementation method of front-end refresh in thinkphp

It is quite simple to implement front-end refresh in thinkphp. Partial refresh can be achieved using jQuery's load() method.

<script type="text/javascript">
$(document).ready(function() {
    $("#refreshBtn").click(function(){
        $("#data").load(location.href+" #data>*","");
    });
});
</script>

The id of the area that needs to be refreshed is data, and the id of the refresh button is refreshBtn. After clicking the refresh button, jQuery's load() method is used to re-obtain the content of the data area in the current URL and display it on the page, thereby refreshing the page.

3. Implementation method of back-end refresh in thinkphp

To implement back-end refresh in thinkphp, you can use two methods:

1. Use the header() function of native PHP

Redirect the page to the current page through the header() function to refresh the page.

header("Location:".$_SERVER['REQUEST_URI']);

$_SERVER['REQUEST_URI'] is used here to obtain the url path of the current request, thereby realizing page redirection and page refresh.

2. Use the redirect() function encapsulated by thinkphp

The redirect() function is a page jump function encapsulated by thinkphp, which can realize page redirection and page parameter transfer.

return $this->redirect($_SERVER['REQUEST_URI']);

The redirect() function encapsulated by thinkphp is used here to refresh the page. You can also pass params parameters as needed to handle specific business logic.

4. Frequently Asked Questions and Solutions

1. Duplicate submission problem occurs after refreshing

Appears The main reason for this problem is that when the user submits the form, the browser stores the form data in the cache. When the user refreshes the page, the browser will automatically submit the form data repeatedly.

Token verification of the form can be achieved by using Cookie or Session. For specific methods, please refer to CSRF Attack and Defense.

2. ajax refresh page is invalid

The reason for this problem may be that the ajax caching mechanism prevents the page from being refreshed.

Solution: Add the cache: false attribute to the ajax request to disable ajax caching.

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